update version to 1.4

Update version to v0.1.3

Create tagged version 0.1.2post1

Add release tag v0.1.2

Release version 0.1.1 (#293)

* Release version 0.1.1

* Update change log

* Minor updates

v0.1 release

* Update README
* Update version to `v0.1` in version.py, setup.py, CHANGELOG.md

add CHANGELOG.md